Steel structure, as an important form of building structure, requires various inspections and tests during the design, manufacturing, and construction stages to ensure its quality and safety. The following are the inspections and tests that may be required for steel structures at different stages:

1. Material testing: including chemical composition analysis, mechanical performance testing, physical performance testing, etc. of steel used for steel structure manufacturing to verify compliance with design and specification requirements.

2. Manufacturing inspection: This includes inspection and testing of the manufacturing process of steel structural components, including welding, riveting, cutting, stamping, and other processes, to ensure the quality of component manufacturing.

3. Dimensional inspection: This includes measuring and inspecting the dimensions of steel structural components to verify their compliance with design and regulatory requirements.

4. Welding inspection: Welding is a commonly used connection method in steel structure manufacturing, and requires weld inspection, including weld appearance inspection, size measurement, and non-destructive testing of welds (such as X-ray testing, ultrasonic testing, etc.) to ensure the quality and reliability of welds.

5. Surface treatment inspection: This includes inspecting and testing the surface treatment of steel structural components (such as spraying, hot-dip galvanizing, etc.) to verify compliance with specification requirements and ensure the quality of surface treatment.

6. Load test: After the installation and construction of the steel structure is completed, load tests, including static and dynamic load tests, are required to verify the bearing capacity and stability of the steel structure.

7. Corrosion detection: Steel structures may be affected by corrosion during use, and corrosion detection is required, including inspection and testing of the surface and interior of components to ensure that their corrosion condition meets the specified requirements.

The above are just some common steel structure inspection items, and the specific inspection requirements and standards may vary depending on different projects, design requirements, and regulatory requirements. Specific inspection arrangements need to be made according to the actual situation.